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Cooling-induced reverse martensitic transformation in Co-based Heusler alloys

Research Project

Project/Area Number 25630260
Research Category

Grant-in-Aid for Challenging Exploratory Research

Allocation TypeMulti-year Fund
Research Field Physical properties of metals/Metal-base materials
Research InstitutionTohoku University

Principal Investigator

KAINUMA Ryosuke  東北大学, 工学(系)研究科(研究院), 教授 (20202004)

Co-Investigator(Renkei-kenkyūsha) OHNUMA Ikuo  東北大学, 大学院工学研究科, 准教授 (20250714)
OMORI Toshihiro  東北大学, 大学院工学研究科, 助教 (60451530)
UMETSU Rie  東北大学, 金属材料研究所, 准教授 (60422086)
Project Period (FY) 2013-04-01 – 2015-03-31
Project Status Completed (Fiscal Year 2014)
Budget Amount *help
¥3,900,000 (Direct Cost: ¥3,000,000、Indirect Cost: ¥900,000)
Fiscal Year 2014: ¥1,950,000 (Direct Cost: ¥1,500,000、Indirect Cost: ¥450,000)
Fiscal Year 2013: ¥1,950,000 (Direct Cost: ¥1,500,000、Indirect Cost: ¥450,000)
Keywordsマルテンサイト変態 / 冷却誘起逆変態 / 磁性形状記憶合金 / 比熱 / 磁気変態 / 形状記憶合金 / 状態図
Outline of Final Research Achievements

Recently, in the CoCrGaSi Hesler alloy system, an anomalous martensitic transformation (AMT), where the L10 martensite phase transforms again to L21 parent phase on cooling, have been found. Moreover, cooling-induced shape memory effect has first been reported by using the thermoelastic AMT.
In this study, for the CoCrGaSi Hesler alloys, basic physical and superelastic properties were examined in order to clarify the origin of the abnormal phenomenon. Through this project, it has been suggested that its origin may be due to magnetic transformations in both the parent and martensite phases.

Report

(3 results)
  • 2014 Annual Research Report   Final Research Report ( PDF )
  • 2013 Research-status Report
  • Research Products

    (6 results)

All 2015 2014 2013

All Journal Article (3 results) (of which Peer Reviewed: 3 results,  Acknowledgement Compliant: 1 results) Presentation (3 results)

  • [Journal Article] Anomalous physical properties of Heusler-type Co2Cr(Ga,Si) alloys and thermodynamic study on reentrant martensitic transformation2015

    • Author(s)
      X. Xu, M. Nagasako, M. Kataoka, R.Y. Umetsu, T. Omori, T. Kanomata and R. Kainuma
    • Journal Title

      PHYSICAL REVIEW B

      Volume: 91 Issue: 10

    • DOI

      10.1103/physrevb.91.104434

    • Related Report
      2014 Annual Research Report
    • Peer Reviewed / Acknowledgement Compliant
  • [Journal Article] Magnetic properties and phase stability of Co2Cr(Ga, Si) Heusler alloys2014

    • Author(s)
      R. Y. Umetsu, A. Okubo, X. Xu, R. Kainuma
    • Journal Title

      JOURNAL OF ALLOYS AND COMPOUNDS

      Volume: 588 Pages: 153-157

    • DOI

      10.1016/j.jallcom.2013.10.209

    • Related Report
      2013 Research-status Report
    • Peer Reviewed
  • [Journal Article] Cooling-induced shape memory effect and inverse temperature dependence of superelastic stress in Co2Cr(Ga,Si) ferromagnetic Heusler alloys2013

    • Author(s)
      X. Xu, T. Omori, M. Nagasako, A.Okubo, RY. Umetsu, T. Kanomata, K. Ishida, R. Kainuma
    • Journal Title

      APPLIED PHYSICS LETTERS

      Volume: 103 Issue: 16 Pages: 164104-164104

    • DOI

      10.1063/1.4825271

    • Related Report
      2013 Research-status Report
    • Peer Reviewed
  • [Presentation] リエントラント構造相転移を示すCo2Cr(Ga,Si)合金の磁場誘起逆マルテンサイト変態2014

    • Author(s)
      許皛, 木原工, 徳永将史, 大森俊洋, 梅津理恵, 鹿又武, 貝沼亮介
    • Organizer
      (社)日本金属学会2014年(第155回)秋季講演大会
    • Place of Presentation
      名古屋大学(名古屋)、日本
    • Year and Date
      2014-09-24 – 2014-09-26
    • Related Report
      2014 Annual Research Report
  • [Presentation] Re-entrant martensitic transformation and cooling-induced shape memory effect in Co2Cr(Ga,Si) ferromagnetic Heusler alloys2014

    • Author(s)
      X. Xu, T. Omori, M. Nagasako, A.Okubo, R.Y. Umetsu, T. Kanomata,K. Ishida, R. Kainuma
    • Organizer
      ICOMAT 2014
    • Place of Presentation
      Bilbao Spain
    • Year and Date
      2014-07-05 – 2014-07-11
    • Related Report
      2014 Annual Research Report
  • [Presentation] Co2Cr(Ga,Si)ホイスラー合金におけるリエントラント挙動を示すマルテンサイト変態2014

    • Author(s)
      許皛, 大森俊洋, 長迫実, 大久保亮成, 梅津理恵, 鹿又武, 石田清仁, 貝沼亮介
    • Organizer
      (社)日本金属学会2014年(第154回)春季講演大会
    • Place of Presentation
      東京工業大学
    • Related Report
      2013 Research-status Report

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Published: 2014-07-25   Modified: 2019-07-29  

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